HOMIM assay detected 7 phyla. As with pyrosequencing, Firmicutes, Proteobacteria, Bacteroidetes, Actinobacteria, and Fusobacteria were the major phyla identified by HOMIM, accounting for 96.5% of the distribution. No phyla were detected by HOMIM that were undetected in pyrosequencing, with the relative distribution being similar by the two methods (Chi square p value = 0.65). Correlations for abundance, comparing continuous level 16S rRNA sequence read ratio and HOMIM relative intensity, for the five major phyla ranged from r = 0.70 to r = 0.86. Relative abundance of phyla from pyrosequencing and HOMIM assay are shown for each individual in Figure 1.